Most people are idiots--sorry. They see a show called Buffy the Vampire Slayer, about high school students, and they assume it should be suitable for everyone from 8 to 80. That includes programming execs who schedule it at 8 p.m., which used to be considered "family hour" (6 p.m. in the UK). Even Dawn would say, "Assume would make you an ass out of me. Heh, um, or, uh, something" ("Wrecked").